Site name	Tura
AsiaFlux site code	TUR
Location	Evenkia Autonomous District in central Siberia,  Russia
Position	64.208888 degN, 100.463555 degE
Elevation	250 m above sea level
Slope	Almost flat, slightly sloped down to north
Terrain type	higher terrace of the Nizhnya Tunguska River
Area	More than 250 ha
Fetch	600-1200 m
Climate	Extremely continental, rather hot summer and very  cold winter, air temperature diurnal range larger  than 15 degree. (snow-fully humid-cool summer  [Dfc] : Kottek et al. (2006))
Mean annual air temperature	-9.2 degreeC
Mean annual precipitation	317 mm
Vegetation type	Larix gmelinii forest
Domestic species (Overstory)	Larix gmelinii
Dominant species (Understory)	Lichen and mosses: Cladina stellaris, Cetraria  cuculata, Pleurozium schreberi, etc. Shrubs:  Betula  nana, Ledum palstre, Vaccinium  uliginosum,  Vaccinium vitis-idaea, etc.
Canopy height	3.4 m
Age	105 years in 2005
LAI	Less than 0.3
Soil type	Cryosol (Gelisol : USDA Soil Taxonomy),  permafrost table depth less than 1m

Observations
Eddy Covariance method (CO₂)

System	Sonic anemometer and Open path IRGA
Wind speed	3-D sonic anemometer (R3, Gill, UK)
Air temperature	3-D sonic anemometer (R3, Gill, UK)
Water vapor	Open path gas analyzer (LI7500, LICOR,USA)
CO2	Open path gas analyzer (LI7500, LICOR,USA)
Measurement height	19.7 m
Sampling frequency	10 Hz
Averaging time	30 min
Data logger	CR-5000 (Campbell, USA)
Data storage	PCMCIA ATA Flash card 1.8 GB
Original data	Raw data

Meteorology

Observation items	Levels/ Depth	Instrument
Global solar radiation(incoming)	19.0 m	Net Pyrradiometer  (CNR-1, Kipp and Zonen, Netherland)
Global solar  radiation (outgoing)	18.6 m	Net Pyrradiometer  (CNR-1, Kipp and Zonen, Netherland)
Long-wave radiation(incoming)	19.0 m	Net Pyrradiometer  (CNR-1, Kipp and Zonen, Netherland)
Long-wave radiation(outgoing)	18.6 m	Net Pyrradiometer  (CNR-1, Kipp and Zonen, Netherland)
Net radiation	18.8 m	Net Pyrradiometer  (CNR-1, Kipp and Zonen, Netherland)
PPFD (incoming)	18.8 m	Quantum sensor  (LI-190SB, LI-COR, USA)
PPFD (outgoing)	18.7 m	Quantum sensor  (LI-190SB, LI-COR, USA)
Direct / diffuse radiation	-
Direct / diffuse PPFD	-
Air temperature	18.7 m	Platinum resistance thermometer   (HMP45D, VAISALA, Finland)
Humidity	18.7 m	Capacitive hygrometer   (HMP45D, VAISALA, Finland)
Soil temperature	0.05, 0.1, 0.2,  0.4,  0.5m	Platinum resistance thermometer   (JIS-Pt100 4wire type)
Soil heat flux	0.02, 0.05 m	Heat flux plate  ( HF-01, REBS, The Netherlands)
Soil water   content	0.05, 0.1, 0.2,  0.4,  0.5m	TDR (CS616, Campbell, USA)
Wind speed	19.5 m	Propeller anemometer  (5103, R.M.Young, USA)
Wind direction	19.5 m	Propeller anemometer  (5103, R.M.Young, USA)
Barometric   pressure	17.2 m	Silicon capacitive pressure sensor  (PTB210, VAISALA, Finland)
Precipitation	19.1 m	Tipping bucket gauge  (T34, Ohta keiki, Japan)
CO2 concentration	19.7 m	CO2/H2O analyzer

Other

Soil respiration	Closed chamber measurements in 2005  and 2006
Photosynthesis	None
Ecological investigation	Four permanent plots